AI Damage2003 GMC Yukon XL 1500: common problems
Owners of the 2003 GMC Yukon XL 1500 filed 63 complaints with NHTSA, most often about electrical system and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 63
- involving a crash
- 5
What fails most often
- 1 Electrical system 38% of all complaints
- 2 Service brakes 27% of all complaints
- 3 Vehicle speed control 13% of all complaints
- 4 Steering 11% of all complaints
- 5 Engine 10% of all complaints
- 6 Powertrain 10% of all complaints
- 7 Structure 6% of all complaints
- 8 Visibility 5% of all complaints
- Electrical system: 24 complaints (38% of all), 1 of them with a crash reported by the owner.
- Service brakes: 17 complaints (27% of all), 3 of them with a crash reported by the owner.
- Vehicle speed control: 8 complaints (13% of all), 1 of them with a crash reported by the owner.
- Steering: 7 complaints (11% of all).
- Engine: 6 complaints (10% of all).
Symptoms owners describe
How many of the 63 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 24 | 1 | 0 |
| Service brakes | 17 | 3 | 0 |
| Vehicle speed control | 8 | 1 | 0 |
| Steering | 7 | 0 | 0 |
| Engine | 6 | 0 | 0 |
| Powertrain | 6 | 1 | 0 |
| Structure | 4 | 0 | 0 |
| Visibility | 3 | 0 | 0 |
| Electronic stability control | 2 | 0 | 0 |
| Engine and cooling | 2 | 0 | 0 |
| Air bags | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 1 | 0 |
| Suspension | 1 | 0 | 0 |
| Wheels | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Brake lines corroded resulting in loss of brakes and rear ending school bus. Replaced all brake lines at my cost as well as the damage to the front end of the truck. Now, the known abs brake sensor issue is activating the abs at low speeds.
There is an error message that displays on the dash for myself and thousands of others who own gmc/chevy trucks with these motors. They have a defective throttle position sensor with the truck where it says "reduced engine power".
Vehicle randomly goes into reduce engine power mode and stalls while driving. This has happened multiple times while driving on a highway and going up a hill where it nearly caused a three catastrophic accidents.
The contact experienced the warning light randomly flashing, which drastically reduced the speed to less than 20 mph. The contact had to constantly turn off and restart the vehicle, but the failure continued to progress randomly.
Antilock brakes began to apply themselves in right hand turns going up and down hill at speeds up to 45 mph. Almost causes me to loose control of vehicle. Had to take to hurricane chevrolet several times to get fixed cost almost $4000
While traveling to work my vehicles check engine light came on and the reduced power warning came on at which time I had complete loss of acceleration, complete loss of braking, and complete loss of steering power.
I keep having the display say "reduced engine power". I'll be driving on the highway, doing 65 in rush hour traffic, when all of the sudden the accelerator no longer accelerates and it displays "reduced engine power" on the gauge cluster display.
Has happened to me going 10mph, 55mph, and 70mph on highway, causing a near rear collision because I lost power so quickly. I have had it serviced 6 or 7 times since september 2014 and this issue is not getting resolved.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 4,699 of 36,656 model years in the NHTSA data (top 13% most complained about).
On average one model year of the Yukon XL 1500 has 22 complaints (14 years in the data). This year has 63, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Other years of this model
- Yukon XL 1500 200015 sources
- Yukon XL 1500 200129 sources
- Yukon XL 1500 200223 sources
- Yukon XL 1500 200436 sources
- Yukon XL 1500 200524 sources
- Yukon XL 1500 20065 sources
- Yukon XL 1500 200760 sources
- Yukon XL 1500 200818 sources
- Yukon XL 1500 200911 sources
- Yukon XL 1500 20108 sources
- Yukon XL 1500 201112 sources
- Yukon XL 1500 20125 sources
- Yukon XL 1500 2023407 sources
Questions and answers
What are the most common problems with the 2003 GMC Yukon XL 1500?
Owner complaints to NHTSA most often mention: electrical system, service brakes, vehicle speed control. Total complaints: 63. The most frequent symptoms in complaint texts: brake failure (11%), rust, corrosion (11%), windows, sunroof (10%).
How many service bulletins (TSB) were issued for the 2003 GMC Yukon XL 1500?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2003 GMC Yukon XL 1500 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2003 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.